An electrolyte membrane having a structure wherein fine rubber particles having substantially no ion-conducting group and having an average particle size of 20 nm to 1 \u03bcm are uniformly dispersed in a matrix including a resin component having ion-conducting group. One such method includes creating a mixture having at least a polymer and a filler, forming a sheet from the mixture, cooling the sheet, embossing the sheet, forming multiple roofing products from the sheet and bundling at least some of the roofing products together. Via operation of a drive system, the disk is movable between a sealing position, wherein it prevents water from entering the barrel by moving into alignment with the first bore, and a firing position, wherein the first water-impermeable disk moves out of alignment with the first bore.